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The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…
...
Please implement IORQGE for disable internal IORQ singal in SUPERFO ... data between CPU and ZX bus connect 1:1 = new external ports ... also switch for enable or disable this feature)
... 3 : if external device disable ROMCS then must be internal ... -
Altera CPLD vs Xylinx FPGAI will dig into the world of FPGA's, mainly to find something that can replace one or more GALs for my current and new projects. And it's never bad t…
... norma m?ltiple para joystick ZX Spectrum
// Module Name ... br /> // jumpers to enable/disable protocols and features
input ... ;& !down)? 1'b0 : 1'bz;
assign d[1] = (ena & ... !cs && !fire)? 1'b0 : 1'bz;
endmodule
... -
Another cause for DivIDE problems on 48K'sThe last months some topics were opened to discuss problems with 48K ZX Spectrums and DivIDE. Sofar we found: - Bad Z80's because of poor fanout (si…
... =velesoft;677195][FONT=Arial][SIZE=1]Yes, this can be problem ... then divide in same time disable internal ZX rom and connect external ... can be if ROM in ZX Spectrum is not fast disconnect ... -
Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…
... 't. Not on the 2.1 or 6U motherboards at least ... ) and so, I had to disable ULA while port 98h is ... -de-video-compatible-msx-para-zx-spectrum-articulo-en-espanol/36 ... -
Fully-addressed devices initiative (FADI)I would like to introduce an initiative for those who create new pieces of hardware containing legacy devices with well-known addresses. It says that…
... 't. Not on the 2.1 or 6U motherboards at least ... ) and so, I had to disable ULA while port 98h is ... -de-video-compatible-msx-para-zx-spectrum-articulo-en-espanol/36 ... -
Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]
... =Black_Cat;689917][B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/ ... .
Existing ZX software not support reading of ... enable turbo
IN 1FFD = disable turbo
And russian computer ... url]http://velesoft.speccy.cz/zx/umbrella/umbrella.htm[/url]
Enable 128kB paging in emulatorFrom Zx Spectrum documentation ([url]http://www.worldofspectrum.org/faq/reference/128kreference.htm[/url]) [CODE][SIZE="1"]When memory is being pag…
...
Also on real ZX Spectrum is possible load Z80 ... V=start snap with videoram 1
W=start snap ... -line 2 = rom 0(black)/1(blue)
-line 3 = ... 4 = lock 0(black)/1(red)
Blue flashing border ... 48ram and 128kB features are disable.[/B]
...DIVIDE PLUS - new memory mode DIVIDE128Divide PLUS contain 512kB sram + 512kB flash eprom. Memory paging in this device is enable on two different ports : 1) port #E3 is compatible with o…
... /> LD A,1
OUT (23),A ;disable interrupt,disable MB02 memory,set ... ,24576 ;rom image position in ZX ram
LD DE,8192 ... image with divide system in ZX ram at adress 24576. Rom ...Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …
... memory is read only / log.1 enable writing to external memory ... br /> D6 - log.1=connect ram memory instead ZX rom
D7 ... - log.1=connect rom ... /> - OUT 23,0 - disable external memory and connect ZX rom
New hardware for Spectrum from ShaosI have some ideas for new ZX-peripherals and quickly designed a prototyping board for experiments: [URL=http://nedocon.com/store/speccy/][IMG]http:/…
... /> [IMG]http://nedopc.org/nedopc/zx/image/speccyr32-sch.jpg[/IMG ... /> [IMG]http://nedopc.org/nedopc/zx/image/speccyr32.gif[/IMG]
1 - B)
bit 7 is used to disable onboard ROM ...DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
... EnJOY! to work on all ZX Spectrum models.)
1. Enhance the clock circuit ... the user enable or disable the 1K5 resistor which ... a. 16/48K - will disable the 1K5 resistor
... +2A/+2B/+3 - will disable the resistor but enable the ...DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]
... continue with now:
1. Enhance the clock circuit ... the user enable or disable the 1K5 resistor which ... a. 16/48K - will disable the 1K5 resistor
... +2A/+2B/+3 - will disable the resistor but enable the ... may be automatic detection of ZX model:
- ZX16 ...A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... ]
Yes. You could disable [B]bicolor[/B] rendering for ... either of 2 methods:
1 Fill the play area with ... ?[/QUOTE]
I hope ZX-Paintbrush will soon provide support ... it will open automatically in ZX-Paintbrush so you can see ...IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…
... works on any 128k ZX spectrum model, in ... AS80 Assembler for i8080 [1.31]. Page 1
-------------------------------- LD5.A80 ... : d33f OUT (BAS),A; Disable write
0078 : d3ff ...SCF/CCF flags - new discoveryI can't believe that no one is interested in discussing the additional, previously undocumented internal state of the Z80 CPU I have discovered recen…
... section, you need to disable interrupts (if lacking an ... /z80/asm_z80_push_di.asm?revision=1.4&view=markup ... /z80/asm_z80_pop_ei.asm?revision=1.5&view=markup ... is around 1-bit sound. You need to disable interrupts so ... be used in a ZX Spectrum, and I wouldn ...RTC module for DIVIDE[IMG]http://velesoft.speccy.cz/other/rtc_module_v01_full_top.jpg[/IMG] [IMG]http://velesoft.speccy.cz/other/rtc_module_v01_full_bottom.jpg[/IMG] [IMG…
... [URL="http://velesoft.speccy.cz/zx/rtcmodule/index.htm"]http://velesoft ...
Jumper "DISABLE KEMPSTON" - CLOSE=joystick disable
Jumper "DISABLE RTC" - CLOSE ... and D1+D0 in log.1)
JR NZ,ERROR ... and D3-D0 in log.1)
JR NZ, ...ZX-Paintbrush 2.3 publishedDear readers, Today, I published version 2.3 of ZX-Paintbrush. Inspirated by kgmcneil, I decided to follow his ideas and implemented a switchable p…
... )
[IMG]http://www.zx-modules.de/previews/zxpaintbrush15.jpg ... br /> [IMG]http://www.zx-modules.de/previews/zxpaintbrush17.jpg ... inverted picture, I recommend to disable colour display, so you ... INVERSE mode to 1...
[IMG]http://www.zx-modules.de/ ...Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... there is a pragma to disable returning to basic. Instead ... radix);
itoa(1,buffer,1);
[/code]
< ...
[code]
itoa(1,buffer,10);
[/code]
#ifdef __SPECTRUM
// zx spectrum only below
ZX-Modules updatesDear readers, depending on a common change on the file list (establishing the meta block feature), I've updated many of my ZX-Modules applications. …
... , there there are some 1 byte long blocks. Maybe ... And my mods done with Zx Blockeditor are here:
... your zip file in ZX-Blockeditor and tried to ... this problem, I should either disable the "run file" function ... to do with the 1-byte blocks. Works perfect ...External Z80 CPUHi Looking for some advice if possible. Many years ago I had a plug-in board for a Spectrum 48k which had a couple of switches, a z80 CPU, and a S…
... active low signals. So to disable the internal Z80 CPU, connect ... ://www.zxdesign.info/book/"]The ZX Spectrum ULA[/url] Book is ... flash) chip. Program the normal ZX Spectrum ROM in one half ... (EPROM pin 27 or pin 1 on a 28C256 flash) to ...[NEW] Retro Virtual Machine v1.0.0 for OSX released!!!!Here it is! Retro Virtual Machine v1.0.0 RELEASED!!!! Many thanks first to Patrik Rak for the PZX format and for their Z80 tests without which RVM…
... window resizable. I try to disable the GPU bilinear filter but ... "]
Needs Interface 1 and Microdrive emulation for ZX Spectrum 16/48K ... /> Needs Melodik AY emulation for ZX Spectrum 16/48K
[/quote ...Are turbo loaders worth it?I found turbo loaders fascinating and I've spent quite some time disassembling and trying different types, and they work great when I load the games …
... had any problems with my ZX Spectrum + with cheap cassette (other ... "relaxed" load characteristics... unless you disable all accelerations. Some things that ... and headerless blocks will spare 1 or 2 seconds per block ...Suggestion for ZX Uno improvementsI really enjoy my ZX Uno, however, I do see some improvements that I think could be made to the Uno. 1) When you press CTRL-ALT-Backspace or when …
[quote]
1) When you press ... first time delay when the ZX-One feeds
[/ ... implemented in the core ZX Spectrum and Master System ... them unofficially. In the ZX-One crowdfunding will not ... pokeador of CargandoLeches. First disable the NMI ESXDOS from the ...ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…
... memory refresh operation and crash ZX. So this register is usually ... 3 addresses in sequence:
1 - LD A,(HL) instruction byte ... .
Use one combination to disable banks.
Use 127 for ...A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... compile
zcc +zx -vn -O3 -startup=31 - ... o demo
appmake +zx -b demo_CODE.bin -o demo ... compile
zcc +zx -vn -SO3 -startup=31 -clib ... o demo
appmake +zx -b demo_CODE.bin -o demo ... = {
{0,128,88,1,1}, {0,128,120,2,0 ...I'm writing an Operating SystemOkay this might seem like a bait thread, but I am legitamately interested in figuring out how to write a multi-process system for the ZX Spectrum (no…
... 256-byte aligned tables...)
1. Compile your code to produce ... replace ROM then simply rewrite zx basic interpreter as an application ... system addressing problems (i.e. disable POKE command).
Voila ...[NEW] Speccy for Android ReleasedHello, All! A while ago, I have released the Android version of [i]Speccy[/i], my ZX Spectrum emulator. It emulates Spectrum 16k, 48k, 128k, +2, +2A…
... [b]Speccy 4.2.1 for Android[/b], a ... new version of my Sinclair ZX Spectrum emulator:
... :
* Added option to disable GLES linear filtering.
* ... Select "Video | Interpolation Effect | Disable Interpolation" to enable.
* Made ..."ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…
... versions of the calculator;
- ZX Printer listings for both the ... key;
= a routine will disable square roots of negative numbers ... for values greater than +1 or less than -1
= using the ... the variable OT = ((s(1)+(PI/2))/PI as being ...DivIDE allram mode help neededHi guys, are there any DIVIDE wizards out there that can explain how i page in the allram and add a rom file to it i sometimes need to load spect…
... here is some limits:
1) after connect mapram memory CPU ... memory and connect back ZX rom. Custom ZX rom image must be ... mapram mode:[/u]
1) set ramtop at under 49152 ...
di ;always must be DIsable interrupt, else during LDIR jump ...
